CN1892281A - Large radio astronomical telescope common-drive parallel connected array mechanism - Google Patents
Large radio astronomical telescope common-drive parallel connected array mechanism Download PDFInfo
- Publication number
- CN1892281A CN1892281A CN 200610011941 CN200610011941A CN1892281A CN 1892281 A CN1892281 A CN 1892281A CN 200610011941 CN200610011941 CN 200610011941 CN 200610011941 A CN200610011941 A CN 200610011941A CN 1892281 A CN1892281 A CN 1892281A
- Authority
- CN
- China
- Prior art keywords
- reflecting surface
- surface unit
- branched chain
- common
- array mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 238000010276 construction Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Landscapes
- Telescopes (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Large radio astronomy telescope co-driving parallel connection array mechanism belongs to physical construction designing technology field, in particular relating to co-driving parallel connection mechanism array having strong coupling character. It featuring that: each unit lower end connected with base through guiding constraint branched chain for restricting reflection plane unit rotating at horizontal direction, one active branched chain located below all nonadjacent peak, through one telescopic link flex action to control above three reflection plane units cooperation movement. The present invention can realize reflection plane long range matching movement on occasions of reducing drive motor number.
Description
Technical field
Large radio astronomical telescope common-drive parallel connected array mechanism belongs to the Design of Mechanical Structure technical field, particularly a kind of common drive parallel mechanism array with strong coupling characteristic.
Background of invention
In the process of human exploration of the universe, big telescope is indispensable instrument.Moreover, in such as fields such as earth environment problem, Solar Physics and military affairs, big telescope is also being brought into play irreplaceable effect.Just be based on big telescopical importance, various countries competitively build large-scale astronomical telescope, innovative 300 meters bore radio telescopes are just being established in plan as Canadian LAR (Large Adaptive Reflector), and expensive 2,000,000,000 dollars of huge optical telescopes of building 100 meters bores are just being prepared in Europe.Maximum in the world at present radio telescope is the Arecibo telescope of 305 meters bores of the U.S., and its observed result has effectively been verified the conclusion of Einstein general relativity about gravitational radiation, and this is achieved in 1993 and obtains the Nobel prize.The lunar surface addressing of famous Appolo plan is also finished by it.1993, section joins in the 24th conference at kyoto, Japan international wireless electricity, Australia, in, U.S., moral, method, English, Russia, lotus and Canada, India ten state radiostronomers unite proposal: establish equivalent receptor area and be one square kilometre big radio telescope array, realize the hope that they are common, that is exactly a profound secret of opening universe before the electromagnetic pollution that causes the mankind is not also flooded the earth fully.Countries in the world all wish to build big telescope array in this country.The U.S., Canada, Australia, Holland and China have all proposed to help the scheme of this country.It is advantageous condition that numerous natural karst depression, China Guizhou Province is used to build the big radio telescope array of Arecibo type, and quietly electromagnetic environment is array to be striven for being built in the considerable advantage of China in addition.
Under the subsidy of Chinese Academy of Sciences's knowledge innovation project, Nation Astronomical Observatory and international co-operation person are advancing and building the reflecting surface bore in China Guizhou Province is 500 meters large-scale radio telescope, be called FAST (Five-hundred-meter-aperturespherical telescope), as guide's project of the world big radio telescope array plan.The Science magazine is three report FAST projects successively, it serves to show its scientific meaning.
It is huge building big telescopical expense.U.S.'s Arecibo telescope is established in the sixties in 20th century, and the accumulative total cost is 100,000,000 dollars.Can low cost ground build pilot unit and not only have impetus, and build China in and also have cogency for the big telescope array in the world is striven to the development of the astronomical cause of China.If indiscriminately imitate the telescopical platform-type feed support scheme of Arecibo (design of U.S. Cornell university), 500 meters telescopical platform structures of bore of big zenith angle will be that weigh thousands of tons of, span covers 250 meters circles of Ф, is suspended on 150 meters aerial large scale structures.Such structural cost is the costliness that is difficult to bear.No platform scheme can reduce supporting construction weight greatly, realizes that feed supports thereby be expected to low cost.The fixed reflection surface of radio telescope need not changed into initiatively reflecting surface yet there is platform scheme, to realize the paraboloidal real-time fitting of rotary reflection, finally overcoming fixedly, the non-point-like of sphere focuses on the spherical aberration that forms.At present the active reflecting surface of 500 meters bores of estimation need be made of 2000 reflecting surface unit nearly.Reach the scientific goal one observation 5GHz electromagnetic wave of FAST, the error of fitting root-mean-square value of all reflecting surface unit should be in 4 millimeters.Because the quantity of reflecting surface unit is very big, how to reduce the number of drive motor, realize effective control of each reflecting surface unit simultaneously, be the key that realizes the FAST project.
Summary of the invention
The object of the invention provides a kind of common-drive parallel connected array mechanism that can be used for big radio telescope active reflecting plane, this parallel connected array mechanism can be realized the initiatively campaign of match on a large scale of reflecting surface requirement, effectively reduce the number of driver element simultaneously, reduce engineering cost.
Technical scheme of the present invention is, draw together pedestal (7) and interconnect the reflecting surface of forming by a plurality of regular hexagon reflectings surface unit (1), described any one regular hexagon reflecting surface unit (1) all is total to the summit with other regular hexagon reflecting surface unit (1), it is characterized in that described each lower end, reflecting surface unit (1) links to each other with pedestal (7) by the guiding constraint side chain that a restriction described reflecting surface unit (1) rotates in the horizontal direction; Below all non-conterminous summits of described reflecting surface an active branched chain is arranged all, this active branched chain is to control the active branched chain of 3 reflecting surface unit (1) cooperation motion of its top by the expanding-contracting action of an expansion link.
Described guiding constraint side chain contains a Hooke's hinge (9) that is connected with lower end, described reflecting surface unit (1), and an end of the other end of this Hooke's hinge (9) and a driven expansion link (8) is fixed, and the other end of this driven expansion link (8) and pedestal (7) are fixing.
Described active branched chain contains one one end and pedestal (7) is fixing, the active telescopic drive bar (6) that the other end and a supporting seat (5) are fixing, also contain the support bar (3) that 3 two ends connect ball pivot (2), one end of described 3 support bars (3) is connected on the described supporting seat (5) by described ball pivot (2), and the other end is connected to the lower end, 3 reflecting surface unit (1) of its top by described ball pivot (2).
The described ball pivot (2) that is connected with reflecting surface unit (1) is to be connected near the summit of above-mentioned 3 reflectings surface (1) adjacent one another are.
Evidence, the present invention can realize the campaign of match on a large scale of reflecting surface under the situation of the number that reduces drive motor, reached its intended purposes.
Description of drawings
Fig. 1 is the general illustration of the common-drive parallel connected array mechanism of the present invention's proposition.
Fig. 2 is the decomposing schematic representation of parallel institution.
Embodiment
A reflecting surface that the present invention includes a pedestal, a plurality of regular hexagon reflectings surface unit 1 composition is (in the large radio astronomical telescope field, present employed reflecting surface unit is regular hexagon reflecting surface unit), because reflecting surface unit 1 be regular hexagon, thus any one reflecting surface unit all with common summit 4, other reflecting surface unit; Also contain guiding constraint side chain and many active branched chain of equating with the reflecting surface number of unit.Active branched chain is positioned at 4 belows, summit on the reflecting surface, and there is an active branched chain on a summit at interval, active branched chain comprises an initiatively telescopic drive bar 6, a supporting seat 5,3 support bars 3, each support bar 3 two ends connects ball pivot 2, because adjacent reflecting surface unit is common summit, therefore, 3 support bars on supporting 3 are connected with 3 reflecting surface unit 1 of supporting seat 5 and top by ball pivot 2.Initiatively telescopic drive bar 6 drives top 3 adjacent reflecting surface unit 1 simultaneously by supporting seat 5, support bar 3, ball pivot 2, like this, originally each reflecting surface unit needs 3 telescopic drive inputs at least, promptly needs 3 motors to control its pose, and the motor number is 3 times of cell block number.Owing to adopted common driving, a motor of each below, summit can drive input for 3 reflectings surface provide simultaneously now, and it is the same with the number of reflecting surface cell block that the number of required motor reduces to substantially, is 1/3 when not adopting common the driving.
The guiding constraint side chain comprises a Hooke's hinge 9, a driven expansion link 8, Hooke's hinge 9 one ends and reflecting surface unit 1 are consolidated, one end concrete mutually of the other end and driven expansion link 8, the other end of driven expansion link 8 and pedestal 7 are consolidated, and driven expansion link has been limited the rotation around a chain axis (the z axle among Fig. 2).
In conjunction with the accompanying drawings, introduce structure of the present invention and principle of work in detail.
Fig. 1 is the general illustration of parallel mechanism array of the present invention: it comprises some reflectings surface unit 1, and reflecting surface unit 1 is a regular hexagon, and then three reflecting surface unit 1 are adjacent one another are, has a summit 4.
As shown in Figure 2, there is a guiding constraint side chain each 1 below, reflecting surface unit, comprise a Hooke's hinge 9, a driven expansion link 8, Hooke's hinge 9 one ends and reflecting surface unit 1 are consolidated, one end concrete mutually of the other end and driven expansion link 8, the other end of driven expansion link 8 and pedestal 7 are consolidated, and driven expansion link 8 has been limited the rotation around a chain axis z.
Below the summit 4 of three regular hexagon reflecting surface unit adjacent one another are, an active branched chain is arranged, it comprises an initiatively telescopic drive bar 6, a supporting seat 5,6 ball pivots 2, three support bars 3, initiatively an end and the supporting seat 5 of telescopic drive bar are consolidated, and the other end and pedestal 7 are consolidated, support bar one end is connected with supporting seat by ball pivot 2, and the other end also is connected with the reflecting surface unit by ball pivot 2.Then the strong point that connects of each ball pivot on reflecting surface is all by the strong point shared supporting seat of support bar with contiguous 2 reflecting surface unit, just is coupled by ball pivot, support bar, supporting seat between so any reflecting surface unit and the reflecting surface unit that closes on every side.
When carrying out match control, calculate the initiatively stroke of telescopic drive bar 6, initiatively the telescopic drive bar is by supporting seat 5, support bar 3, and the ball pivot 2 at support bar two ends drives three adjacent reflecting surface unit 1 simultaneously, for each reflecting surface unit, when three initiatively the stroke of expansion link changes, driven the change of three supporting seats that link to each other with them and the position of three ball pivots that are connected with the reflecting surface unit, and then caused reflecting surface cell position and attitude to become thereupon.The reflecting surface unit drives driven expansion link 8 motions by Hooke's hinge 9, because driven expansion link 8 lower ends and pedestal concrete mutually, this has just limited the rotation of reflecting surface unit around the z axle, Hooke's hinge only allows the reflecting surface unit to rotate around x, y axle, as shown in Figure 2, x, y axle are two turning axles of Hooke's hinge, xoy plane and reflecting surface unit 1 plane parallel, the z axle is the axis direction of driven expansion link perpendicular to the reflecting surface unit.When all active telescopic drive bars reached the stroke of calculating, parallel mechanism array had just been finished and has been realized the match campaign of rotation parabolic reflector, thereby satisfied the initiatively reflecting surface requirement of surface fitting on a large scale of big telescope.
The present invention compared with prior art has the following advantages and effect: each of parallel mechanism array provided by the invention is main Moving telescopic drive bar drives 3 adjacent reflectings surface simultaneously, makes the decreased number 2/3 of driver element; In addition, parallel connected array machine Structure has higher rigidity, and driven expansion link can overcome the gravity of part reflecting face, and the support that has indirectly improved mechanism is firm Degree.
Claims (4)
1, the common-drive parallel connected array mechanism of large radio astronomical telescope, comprise pedestal (7) and interconnect the reflecting surface of forming by a plurality of regular hexagon reflectings surface unit (1), described any one regular hexagon reflecting surface unit (1) all is total to the summit with other regular hexagon reflecting surface unit (1), it is characterized in that described each lower end, reflecting surface unit (1) links to each other with pedestal (7) by the guiding constraint side chain that a restriction described reflecting surface unit (1) rotates in the horizontal direction; Below all non-conterminous summits of described reflecting surface an active branched chain is arranged all, this active branched chain is to control the active branched chain of 3 reflecting surface unit (1) cooperation motion of its top by the expanding-contracting action of an expansion link.
2, the common-drive parallel connected array mechanism of large radio astronomical telescope as claimed in claim 1, it is characterized in that, described guiding constraint side chain contains a Hooke's hinge (9) that is connected with lower end, described reflecting surface unit (1), one end of the other end of this Hooke's hinge (9) and a driven expansion link (8) is fixed, and the other end of this driven expansion link (8) and pedestal (7) are fixing.
3, the common-drive parallel connected array mechanism of large radio astronomical telescope as claimed in claim 1, it is characterized in that, described active branched chain contains one one end and pedestal (7) is fixing, the active telescopic drive bar (6) that the other end and a supporting seat (5) are fixing, also contain the support bar (3) that 3 two ends connect ball pivot (2), one end of described 3 support bars (3) is connected on the described supporting seat (5) by described ball pivot (2), and the other end is connected to the lower end, 3 reflecting surface unit (1) of its top by described ball pivot (2).
4, the common-drive parallel connected array mechanism of large radio astronomical telescope as claimed in claim 3 is characterized in that, the described ball pivot (2) that is connected with reflecting surface unit (1) is to be connected near the summit of above-mentioned 3 reflectings surface (1) adjacent one another are.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100119410A CN100520483C (en) | 2006-05-19 | 2006-05-19 | Large radio astronomical telescope common-drive parallel connected array mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100119410A CN100520483C (en) | 2006-05-19 | 2006-05-19 | Large radio astronomical telescope common-drive parallel connected array mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1892281A true CN1892281A (en) | 2007-01-10 |
| CN100520483C CN100520483C (en) | 2009-07-29 |
Family
ID=37597346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100119410A Expired - Fee Related CN100520483C (en) | 2006-05-19 | 2006-05-19 | Large radio astronomical telescope common-drive parallel connected array mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100520483C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324625A (en) * | 2011-06-08 | 2012-01-18 | 中国科学院国家天文台南京天文光学技术研究所 | Active reflector structure of radio telescope |
| CN104914549A (en) * | 2015-05-28 | 2015-09-16 | 北京空间机电研究所 | Reflector support structure based on space unlocking |
| CN109854914A (en) * | 2018-11-16 | 2019-06-07 | 成都掩码科技有限公司 | A kind of automatically controlled chou point bracket for realizing hyperplane reconstruct |
| CN112327503A (en) * | 2020-11-11 | 2021-02-05 | 中国科学院上海光学精密机械研究所 | Light path pointing precision adjusting device |
| CN113161759A (en) * | 2020-11-03 | 2021-07-23 | 中国科学院国家天文台 | Radio astronomical telescope combining large-caliber spherical reflecting surface and phase array feed source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2734915B1 (en) * | 1995-05-31 | 1997-08-01 | Aerospatiale | DEVICE FOR PRECISELY POSITIONING THE TOP OF THE SECONDARY MIRROR IN DECENTRATION WITH RESPECT TO THAT OF THE PRIMARY MIRROR OF A TELESCOPE AND TELESCOPE EQUIPPED WITH SUCH A DEVICE |
| CN2371581Y (en) * | 1999-05-10 | 2000-03-29 | 中国科学院南京天文仪器研制中心 | Module attitude controlling mechanism |
-
2006
- 2006-05-19 CN CNB2006100119410A patent/CN100520483C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324625A (en) * | 2011-06-08 | 2012-01-18 | 中国科学院国家天文台南京天文光学技术研究所 | Active reflector structure of radio telescope |
| CN102324625B (en) * | 2011-06-08 | 2013-08-07 | 中国科学院国家天文台南京天文光学技术研究所 | Active reflector structure of radio telescope |
| CN104914549A (en) * | 2015-05-28 | 2015-09-16 | 北京空间机电研究所 | Reflector support structure based on space unlocking |
| CN109854914A (en) * | 2018-11-16 | 2019-06-07 | 成都掩码科技有限公司 | A kind of automatically controlled chou point bracket for realizing hyperplane reconstruct |
| CN113161759A (en) * | 2020-11-03 | 2021-07-23 | 中国科学院国家天文台 | Radio astronomical telescope combining large-caliber spherical reflecting surface and phase array feed source |
| CN113161759B (en) * | 2020-11-03 | 2022-07-08 | 中国科学院国家天文台 | Radio astronomical telescope combining large-caliber spherical reflecting surface and phase array feed source |
| CN112327503A (en) * | 2020-11-11 | 2021-02-05 | 中国科学院上海光学精密机械研究所 | Light path pointing precision adjusting device |
| CN112327503B (en) * | 2020-11-11 | 2022-07-08 | 中国科学院上海光学精密机械研究所 | Light path pointing precision adjusting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100520483C (en) | 2009-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102707729B (en) | A kind of mechanism following the tracks of the sun | |
| AU2009309208B2 (en) | Method for controlling heliostat used for condensing of sunlight and device thereof | |
| JP4527803B1 (en) | Lightweight and thin solar concentrator that can be easily expanded in a plane | |
| US7923624B2 (en) | Solar concentrator system | |
| CN100520483C (en) | Large radio astronomical telescope common-drive parallel connected array mechanism | |
| CN101179157B (en) | Large-scale radio telescope active reflecting plane common drive parallel mechanism array | |
| US20100201600A1 (en) | Support frame for the dish of a large dish antenna | |
| CN101697030B (en) | Heliostat | |
| KR20120123101A (en) | Automatic sunlight-tracking device | |
| CN102167165A (en) | Seven-revolute pair extensible unit and space extensible mechanism using same | |
| CN102799189B (en) | Coordinated type single-axis solar tracker system and rotating drive mechanism thereof | |
| CN109723945B (en) | Precise pointing platform based on flexible parallelogram mechanism | |
| EP3179177A1 (en) | Heliostat with an improved structure | |
| CN202166897U (en) | Mechanism, base frame and linkage for tracking sun | |
| AU2009351371A1 (en) | Solar tracker for orienting solar panels | |
| CN106410362A (en) | Stretching forming mechanism of parabolic cylinder | |
| CN201621889U (en) | Heliostat | |
| US20100024802A1 (en) | Heliostat support and drive mechanism | |
| Zheng et al. | A novel ultralight dish system based on a three-extensible-rod solar tracker | |
| TWI546977B (en) | Tilt type sun tracking device | |
| CN102087400A (en) | Heliostat and interlocking heliostat array device | |
| CN209299203U (en) | Photovoltaic tracking bracket with stroke protection column | |
| CN102062282A (en) | Photovoltaic component bracket | |
| CN105135720A (en) | Supporting frame for reflecting mirror of tower-type photo-thermal power station | |
| Williams et al. | Five-hundred meter aperture spherical radio telescope (FAST) cable-Suspended robot model and comparison with the Arecibo observatory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20100519 |